Answer:
The biggest Push Factor that drove rural Chinese to leave their communities was POVERTY
Step-by-step explanation:
Eastern and Interior provinces of China had large populations with very few opportunities. Most people relied on agriculture for a living that paid very little and there were very few modern amenities if any.
Education was also poor and so was basic governance.
All of this lead to a poverty trap that forced millions of Chinese to leave their small villages and migrate to the large eastern cities of Shanghai and Beijing.